C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/02 (2006.01) C08G 18/08 (2006.01) C08G 18/62 (2006.01) C08G 18/70 (2006.01)
Patent
CA 2237729
Disclosed are aqueous, single-component coating compositions that contain as the primary binder component a polyurea which is the reaction product of: (a) a polymeric component containing at least one polymer based on olefinically unsaturated compounds and containing isocyanate-reactive groups comprising primary amino groups and/or secondary amino groups, with the optional additional presence of hydroxyl groups; and (b) a polyisocyanate component containing polyisocyanate groups in amounts sufficient to provide an NCO/NH equivalent ratio of about 0.5:1 to 1:1.
Cette invention se rapporte à des compositions de revêtement aqueuses à un seul constituant, qui contiennent comme constituant liant primaire une polyurée, laquelle est le produit de réaction entre: (a) un constituant polymère contenant au moins un polymère à base de composés à insaturation oléfinique et contenant des groupes réactifs à l'isocyanate comprenant des gropes amino primaires et/ou des groupes amino secondaires, avec la présence additionnelle éventuelle de groupes hydroxyle; et (b) un constituant polyisocyanate contenant des groupes polyisocyante en quantités suffisantes pour fournir un rapport équivalent NCO/NH compris entre environ 0,5/1 et 1/1.
Jennings Robert E.
Kilic Soner
Nakajima Masayuki
Borden Ladner Gervais Llp
Ppg Industries Inc.
Ppg Industries Ohio Inc.
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